t273 need help bleeding the fuel line!!!

[patmanhaigh]

so I changed the oil and filter for the spring. I also installed 3 new glow plugs as mine went bad and has been starting like crap!! that all went well but I installed a new fuel filter and now I am having an issue where the rpm runs high. I hooked on my finish mower but when I bring the throttle up to 540 it barley spins the mower blade and goes real slow. the manual said I may have air in my fuel lines. I cracked the one bolt right after the fuel pump like the book showed until fuel came out but where is the second that the book talks about? do I have to crack the injectors until bleeds fuel out?.. please help I need to get this up and running but having issues....thanks guys.

 

[Bud Soda]

I have changed my filter a few times and only thing I did was when I reinstalled the plastic part covering the filter I left it a little loose. I then turn the switch on so the little fuel pump will run. When the fuel fills the filter to the top i turn off the switch and tighten the fuel filter. Never had any problem with air in the lines. Sounds like you may have something else going on. I would make sure everything is tight.

 

[myyaz33]

I agree with Bud on this one. I don't think air in the lines is the problem. Any chance you have water/condensation in the fuel?

 

[patmanhaigh]

ok guys I think your both right I think it is something else. I drained the diesel from the tank when I changed the filter just in case I had condensation. I don't believe I have air in the lines because the tractor starts fine and runs fine only thing is it registers high rpm. if I throttle the tractor to half throttle it is in the red on rpm. but the tractor doesn't sound like its over revving. possibly an issue with tach cable?. I don't know?

 

[Bud Soda]

My tach has not read right for a few years now. I can put mine way in the red also. It show it at 1500 rpm at idle and I know it is probably only around 800 or so rpm's I have not gotten around to fixing or replacing my tach yet.

 

[patmanhaigh]

that's exactly whats going on bud soda. it runs good sounds fine but idles around 2100 and to bring up to pto speed its barely off the idle. so I just ran it last night in the red but I know it wasn't over revving. is there a cable associated with the tack that has been damaged? or possibly a censor?

 

[Bud Soda]

I don't know if it has a drive cable like the older tractors or if it is a electric tach drive. I may look at mine over the weekend. Maybe the tach is adjustable. I know when I turn the key on the tack jumps up to 1k. I think it should stay on 0. So I believe it is off by 1K rpms. Probably have to replace the tach to fix. I will let you know if I find out anything after I do a little checking.